Double-acting pump



(No Model.)

S. WHITE.

1 DOUBLE AOTING PUMP.

No. 445,915. Pgtented Feb.3,1891.,

With/asses: lnz/eiwa 7";

UNITED STATES PATENT OFFICE.

STEIVART \VHITE, OF GREENSBURG, PENNSYLVANIA.

DOUBLE-ACTINGPUMP.

SPECIFICATION forming part of Letters Patent No. 445,915, dated February3, 1891.

Application filed October 14,1890. Serial No. 368,106. (No model.)

To all whom it may concern:

Be itknown .that I, S EWART WHITE, of Greensburg, in the county ofIVestmore-laud .and State of Pennsylvania, have invented certain new anduseful Improvements in Double-Acting Pumps; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use it, reference being had to the accompanying drawing, whichforms part of this specification.

Myinvention relates to an improvement in double-acting pumps; and itconsists in the combination and construction of parts which will befully described hereinafter.

The objects of my invention are to pro duee a pump which is constructedalmost entirely of wood, so as to withstand the action of thesulphur-water in a mine, and in which the parts are few and simple andnot liable to get out of order, and to operate the plunger of the pumpby means of a steam-pump connected thereto.

The accompanying drawing represents a pump which embodies "my invention,a portion of the casing being removed.

A represents a box having an opening through one end or side, throughwhich the water passes; and B, the barrels through which the waterpasses to the valve-boxes 0. These valve-boxes are placed at rightangles to the barrels, and in which the spring-actuated valves 1) areplaced.

Rigidly secured to the inner sides of the valve-boxes C are the barrelsF,in which the ends of the plunger G operate, and above these barrels Fare placed the barrels H, which connect at their inner ends with thedischarge-box I, upon which is placed an airchamber .I. The barrels Fare secured to the valve-boxes C by means of brace-rods L, which havetheir inner ends to pass through the plates N, in which the packings areac cured. The plunger G works back and forth through the packings M, andhence there is no wear upon the ends of the barrels. To one end of theplunger G is secured a rod 0, which passes through the outer side of thevalve-box G, and the outer end of this rod is connected to an ordinarysteam-pump placed any suitable distance away. The valveboxes 0 arerigidly clamped against the ends of the barrels B F H by means ofclampingbolts P, which extend through the boxes A and I, and which boltsare protected from the action of the sulphur-water by a covering ofhose. All the bolts used in connection 'with this pump are embedded inthe Wood,

so as to be protected from the action of the water.

here a pump is made of iron, the sulphurwater of a mine very soondestroys it, and hence in order to do away with this material I make allof the barrels and boxes of the pump of Wood; and in order to strengthenthe barrels and the airchamber, metallic bands Q are passed around them,as shown, so as to enable them to withstand the internal pressure of thewater and air. The valve-chambers are preferably made of yellow orNorway pine, while the barrels are made of ordinary wooden pipe. Thepacking-boxes are made of cast-iron or phosphor-bronze. The valve'seatsare also made of phosphor-bronze and are inserted in the wood of thevalveboxes. The valve bolts and springs are preferably made of bronze,while the valves are 7 made of wood, of a circular form and filled withsquare gum packing. The wood of this pump, after being subjected tosulphur-water, becomes almost as hard as iron and improves constantly inthis respect by use and age, wood being so much cheaper than iron andbeing practically indestructible, and no part of the pump beingsubjected to wear except the packing-boxes.

A pump constructed of wood, as here shown, will last almost indefinitelyand cost but about one-third as much as a pump constructed of iron.

Having thus described my invention, I claim- In a pump, the combinationof two parallel end boxes, barrels connected with the ends of the boxesand extending inward, inlet and outlet boxes connecting the inner endsof the said barrels, plunger-barrels connecting the centers of the saidparallel end boxes, a plunger placed in the plunger-barrels, transversedivisions in the said end boxes between the ends of the said barrels,and valves in the said divisions, substantially as shown, and for thepurpose described.

In. testimony whereof I affix my signature in presence of two witnesses.

STEWART IVI-IITE.

Witnesses:

D. K. THOMPSON, THOMAS J. Annsrnone.

